Biodiversity
16 October 2018
Slides at ajrominger.github.io/talks
Biodiversity
Diversity begets productivity
Diversity begets stability
Are we irreversibly altering biodiversity and ecosystems?
Are we irreversibly altering biodiversity and ecosystems?
40% land conversion globally
A long precedent for viewing habitat fragments as islands
Equilibrium island biogeography theory
Equilibrium island biogeography theory
Equilibrium island biogeography theory
Human activity: direct conversion
Human activity: climate change
Human activity: climate change
Losing evolutionary history
Losing evolutionary history
Losing evolutionary history
Losing evolutionary history
Species area relationship \(\hat{S} = f(A)\)
Species extinctions: \(\hat{S}_\text{new} = \hat{S}(A_\text{orig} - A_\text{loss})\)
\(\Rightarrow \hat{S}_\text{extinct} = \hat{S}(A_\text{orig}) - \hat{S}(A_\text{orig} - A_\text{loss})\)
Species area relationship (classic): \(S = cA^z\)
More nuanced approach: \(S = cA^{z(A)}\)
Extinction debt
Extinction debt
Extinction debt
Extinction debt
Extinction debt: species interactions
Extinct in 26,600 years
Spatial configuration
Spatial configuration
False dichotomy between social and natural systems
Ecosystems used by humans are not inhospitable "oceans"
Especially when human use is diverse